Honeywell Sensor and Switch Solutions for HVAC Applications

Product Lines for HVAC Applications

Honeywell offers a comprehensive range of product lines designed to support various Heating, Ventilation, and Air Conditioning (HVAC) applications. These solutions enhance efficiency, improve air quality, and ensure reliable operation across different systems.

✓ Primary sensor/switch used within application (key design consideration for OEM)

✓ Secondary sensor/switch used within application (not a key design consideration)

Demand Control Ventilation

An efficient ventilation system responds to real-time data to optimize air recirculation, improving air quality and reducing HVAC running costs. Demand control ventilators support growing trends for environmentally friendly buildings with better indoor air quality.

• Measures differential pressure for static duct pressure and indoor air quality.
• Adjusts ventilation rates as the sensor is highly sensitive to carbon dioxide in the air.
• Senses CO₂ in demand control & energy recovery ventilation.

Air Purification/Filter Monitoring

Recent trends highlight the increasing importance of cleaner and healthier air, leading to a greater need for air purification and filter monitoring. This ensures optimal air quality and reduces power consumption.

• Monitors differential pressure for clogged filter detection to improve air quality and reduce power consumption.
• Used as air proving switching assemblies, along with mechanical switching for valve position detection.
• Used in HVAC temperature controllers and for thermostat control.
• Used to monitor mass airflow for VAV controllers and inline transmitters.
• Provides motor and fan control, position sensing, and speed sensing for moving parts.

Air Conditioning

Air conditioning systems, whether centralized or standalone, distribute cooled and filtered air. Honeywell sensors monitor compressor output and input pressure to enhance system efficiency and reduce power consumption.

• Monitors air conditioning compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Used to monitor differential pressure for clogged filter detection to improve air quality.
• Used in HVAC temperature controllers and for thermostat control.
• Enables efficient control of electric motors driving fans, blowers, and pumps.

Heating System: Commercial

Commercial boilers heat water and air using combustion, distributing it throughout buildings. Energy efficiency and safety are paramount. Honeywell sensors contribute to efficiency and detect faults and leaks.

• Monitors boiler water/steam output and input pressure to enhance system efficiency and reduce power consumption.
• Airflow Sensor: Used to monitor mass airflow for VAV controllers and in-line transmitters.
• Monitors the flow of warm air or water within the heating system to enhance system efficiency.
• Enables efficient control of electric motors driving fans, blowers, and pumps.
• Used to measure CO levels, as incomplete combustion can produce carbon monoxide, posing a risk.
• Limit Switch: Placed on gas pilots to shut off the gas flow if the pilot goes out.
• Activates or deactivates an element or the entire ventilation system.
• Used to monitor steam pressure (overpressure or low pressure indication) in boilers to prevent potentially explosive situations.
• Acts as air-proving switching assemblies or as a float switch for indicating pipe flow backup.
• Monitors the position of a damper or valve; when fully open, it initiates the program sequence.

Heating System: Residential

Residential heating systems warm air or water for distribution. Energy efficiency, reliability, and safety are key. Honeywell sensors improve efficiency and detect faults and leaks.

• Used to control the flow of warm air or water and detect leaks.
• Used to detect incomplete combustion, which produces odorless, colorless carbon monoxide.
• Used in smart thermostats to efficiently manage the HVAC system and improve occupant comfort.
• Enables efficient control of electric motors driving fans, blowers, and pumps.
• Activates or deactivates an element or the entire ventilation system.

Refrigeration

Refrigeration systems lower and maintain temperatures below ambient. New refrigerants require durable sensors and switches with stable temperatures and burst pressures. Honeywell sensors monitor compressor pressure for efficiency and detect over/under pressure situations.

• Monitors refrigeration compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Provides presence detection, on/off function, function monitoring, and end-of-travel in Zone 2 hazardous locations.
• Used in temperature controllers and for compressor temperature monitoring in refrigeration.
• Enables efficient control of electric motors driving fans, blowers, and pumps.
• Activates or deactivates an element or the entire system.
• Used to monitor overpressure or low pressure indication to prevent potentially explosive situations.

Pressure Sensors and Transducers

Board Mount Pressure Sensors, Basic ABP/ABP2 Series

• Pressure range: 1 inH₂O to 175 psi
• High accuracy, TEB: 1.5% FSS
• Temperature compensated: -40°C to 110°C
• Temperature operating: -40°C to 110°C
• Extensive media compatibility
• Analog & digital (I²C/SPI)
• Best for configurability & value

Board Mount Pressure Sensors, TruStability™ RSC, HSC and SSC Series

• Pressure range: 0.5 inH₂O to 150 psi
• High accuracy, TEB: 1.0% FSS
• Temperature compensated: -40°C to 85°C
• Temperature operating: -40°C to 85°C
• Outstanding EMI/EMC performance
• Analog & digital (I²C/SPI)
• Best for accuracy, stability & performance

Heavy Duty Pressure Transducers, MIP Series

• Pressure range: 15 psi to 900 psi
• High accuracy, TEB: 0.75% FSS
• Temperature operating: -40°C to 125°C
• Compatible with a wide range of fluids and gases
• Rugged stainless steel 304L construction
• Outstanding EMI/EMC performance
• Best for accuracy, stability & performance

Hall-Effect and Magnetoresistive Sensor ICs

Linear Hall-Effect Sensor ICs, SS490 Series

• Small size with low power consumption
• Single current sinking or current sourcing linear output
• Built-in laser trimmed thin-film resistors allow sensitivity and temperature compensation
• Responds to either positive or negative gauss
• Quad Hall sensing element for stable output

Magnetoresistive Sensor ICs, Nanopower Series (SM351LT/SM353LT); Standard Power Series (SM351RT/SM451R/SM353RT/SM453R)

• SOT-23 package (SM351LT/SM353LT/SM351RT/SM353RT); flat TO-92-style (SM451R/SM453R)
• Sensitivity of 7 G typ., 11 G max. (SM351LT/SM351RT/SM451R); 14 G typ., 20 G max. (SM353LT/SM353RT/SM453R)
• Omnipolar sensing activates with either pole from a magnet

High Sensitivity Latching Hall Sensors (SS360ST/NT/PT and SS460S for BLDC commutation)

• Fastest response time in its class
• No chopper stabilization
• High sensitivity; operates from only 30 gauss typ.
• Bipolar latching magnetics
• Can be supplied on tape-and-reel

Temperature Sensors

Thermistors, 192/194 Series

• High quality, low-cost, resistance temperature-matched interchangeable units
• Dissipation constant in still air: 0.75 mW/°C
• Time constant in air: 15.0 s
• Maximum diameter: 2.413 mm (0.095 in)
• Resistance temperature curve, interchangeability, enhanced stability and life, epoxy coated

Gas Sensors

Carbon Dioxide Gas Sensor, CRIR-M1 Series

• Single channel, non-dispersive infrared (NDIR) sensor for detecting Carbon Dioxide
• Small size
• Maintenance-free for normal indoor applications
• Enhanced long-term stability
• Higher accuracy: ±40 ppm ±3% of reading
• Consistency and repeatability
• Auto baseline correction (ABC)

Carbon Monoxide Gas Sensor, ECOSURE X

• Cost-effective two-electrode electrochemical cell designed for the detection of carbon monoxide in domestic/residential CO detection, industrial fire detection, and ventilation control.
• Unique design for use in extreme environments.
• Suitable for use in BS, EN, UL, LPC, VDS, and TÜV accredited products.
• Features an integrated active filter to eliminate false alarms caused by common household vapors.

Airflow Sensors

AWM3300 Series

• Small size
• Amplified signal conditioning
• 30 SCCM to 5 mBar
• Analog output
• 50 mW typ. power consumption
• -25°C to 85°C (-13°F to 185°F) range

MICRO SWITCH BASIC SWITCHES

MICRO SWITCH Large Basic Switches, IBZ and WA Series; DT Series

• Accepted world-wide standard "Large Basic" switch
• Low operating force and differential travel
• Long mechanical life up to 20,000,000 cycles at 95% survival
• Current rating ranges from 15 A to 25 A
• Choice of actuation, termination, and operating characteristics
• Two independent single-pole double-throw circuits in one housing and actuator (DT)

MICRO SWITCH V-Basic Miniature Switches, V19 Series

• RoHS/REACH/Cal Prop65 compliant
• UL/CSA, cUL, ENEC, CQC certifications enable global design acceptance and cost savings in agency approvals
• 5 A, 16 A: electrical ratings for design flexibility in one industry standard package
• > 1M mechanical operations

MICRO SWITCH V-Basic Miniature Switches, V15 Series

• Designed for 10K to 50K operations at a full load or 5M for mechanical life
• World-wide package size acceptance
• Current rating ranges of 10 A and 26 A
• UL/CSA, cUL, UKCA, ENEC, and CQC approvals

MICRO SWITCH Explosion-Proof Basic Switches, V15W2 Series

• Approved for use in Zone 2 hazardous locations
• IP67 equivalent
• UL, cUL, UKCA, ENEC, CQC, ATEX, IEC Ex approvals
• 5 A electrical rating
• Longer service life: over one million mechanical operations

MICRO SWITCH Subminiature Switches, ZM/ZW/ZX Series

• Best suited for lower cost-of-failure applications
• Small, lightweight, low cost, enhanced life, ample electrical capability
• Choice of low energy or power-duty electrical ratings (gold-plated or silver contacts)
• Choice of ratings, actuation, termination, and operating characteristics
• UL/CSA, cUL, ENEC, and CE approvals

MICRO SWITCH TOGGLE SWITCHES

MICRO SWITCH Toggle Switches, NT Series

• ISA 12.12.01 certified; designed for use near flammable hydrocarbon refrigerants
• Quick-connect spade terminals
• UL191 electrical rating
• Sealed to NEMA 3, 3R, 4, 13, and IP67
• Operating temperature range: -40°C to 71°C [-40°F to 160°F]

MICRO SWITCH PUSHBUTTON SWITCHES

Operator Interface Switches and Indicators, AML Series

• Pushbuttons, paddles, rockers, key-actuated, and indicators within AML Series for coordinated panel appearance
• Less than 1.75 inch panel depth
• Two or three positions and maintained or momentary action
• One-, two-, or four-poles with double throw available for most switches

PRESSURE SWITCHES

Extended Duty Pressure Switches, 5000 Series

• Specifically designed to stand up to extended duty applications
• Factory set but capable of field adjustment
• Direct action blade contact
• Burst pressure: 750 psi for 0.5 psi to 24 psi set point range; 1250 psi for 25 psi to 150 psi set point range

Warranty/Remedy

Honeywell warrants its manufactured goods to be free from defective materials and faulty workmanship. Honeywell's standard product warranty applies unless otherwise agreed in writing. For specific warranty details, refer to your order acknowledgment or consult your local sales office. If warranted goods are returned to Honeywell during the coverage period, Honeywell will, at its option, repair or replace, without charge, those items found defective by Honeywell. The foregoing is the buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Honeywell shall not be liable for consequential, special, or indirect damages.

While Honeywell may provide information or engineering support through its personnel, literature, and website, it is the buyer's sole responsibility to determine the suitability of Honeywell products for the buyer's requirements.

Specifications are subject to change without notice. The information supplied is believed to be accurate and reliable. However, Honeywell assumes no responsibility for its use.

FOR MORE INFORMATION

Honeywell Sensing Solutions serves customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing, or the nearest Authorized Distributor, visit automation.honeywell.com/hss or call:

Honeywell Sensing Solutions

830 East Arapaho Road
Richardson, TX 75081
www.honeywell.com

Document Number: 009636-3-EN | Revision: 3 | Date: 07/25

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